King’s always a very fast read, it’s one of his strengths.
The Dark Tower is an interesting literary work, if for nothing else than the way that it tortured King while he was trying to finish it.
I recall reading the first 3 books as a kid. At the end of the Wastelands, the book says, “Coming soon, ‘Wizard and Glass’!” So I went to the bookstore to get it, and of course it wasn’t there… and it wasn’t there for like, I dunno, many many years. And then I guess King got hit by a car or something and almost died… then he finished the series.
The end of the Dark Tower seems kind of rushed… especially the final sequence with the Crimson King. I recall being extremely disappointed with this guy who was supposedly destroying all of creation just being a shrieking idiot. I think on some very real level, King just wanted to finish the series and be done with it.
Some folks didn’t like the ending, but I did. Was kind of hopeful, if not a clean resolution.
It was interesting that when he finally finished the series, he went on a tear and wrote a bunch of other books.